Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh doanh » hang doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
doanh cua » doanh luan
cua nhung » va nhung
phan dau » phan tu, hang dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sach) OR (chieu sang)) - hanh doanh cua nhung cong thanh ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (chieu sang)) - hanh doanh cua nhung cong thanh ((phan lap) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sach) OR (chieu sang)) - hanh doanh cua nhung cong thanh ((phan lap) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) OR (chieu sang)) - hanh doanh cua nhung cong thanh ((phan lap) or (phan dau))*.